extern int v3p_netlib_dseupd_(
  v3p_netlib_logical *rvec,
  char *howmny,
  v3p_netlib_logical *select,
  v3p_netlib_doublereal *d__,
  v3p_netlib_doublereal *z__,
  v3p_netlib_integer *ldz,
  v3p_netlib_doublereal *sigma,
  char *bmat,
  v3p_netlib_integer *n,
  char *which,
  v3p_netlib_integer *nev,
  v3p_netlib_doublereal *tol,
  v3p_netlib_doublereal *resid,
  v3p_netlib_integer *ncv,
  v3p_netlib_doublereal *v,
  v3p_netlib_integer *ldv,
  v3p_netlib_integer *iparam,
  v3p_netlib_integer *ipntr,
  v3p_netlib_doublereal *workd,
  v3p_netlib_doublereal *workl,
  v3p_netlib_integer *lworkl,
  v3p_netlib_integer *info,
  v3p_netlib_ftnlen howmny_len,
  v3p_netlib_ftnlen bmat_len,
  v3p_netlib_ftnlen which_len
  );